383620809 has 16 divisors (see below), whose sum is σ = 600917184. Its totient is φ = 214612800.

The previous prime is 383620777. The next prime is 383620817. The reversal of 383620809 is 908026383.

It is not a de Polignac number, because 383620809 - 2⁵ = 383620777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (383620819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446682 + ... + 447539.

It is an arithmetic number, because the mean of its divisors is an integer number (37557324).

Almost surely, 2^383620809 is an apocalyptic number.

383620809 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

383620809 is a deficient number, since it is larger than the sum of its proper divisors (217296375).

383620809 is a wasteful number, since it uses less digits than its factorization.

383620809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894248.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 383620809 is about 19586.2402977192. The cubic root of 383620809 is about 726.6089098060.

The spelling of 383620809 in words is "three hundred eighty-three million, six hundred twenty thousand, eight hundred nine".